Refrigeration apparatus



Feb. 12, 1935. M. P. FUGLE 1,990,541

REFRIGERATION APPARATUS Filed May 16, 1932 A ORNEY 7 so as to contact the sion of a refrigeration Patented Feb. l2, 1

Matthew P. Fuel eral and particularly to highly practical cooling L99L51 REFRIGERATHQN AIEPTUS a corporation of e'. a}: Park, at, Larkin Refrigerating Corporation,

Georgia assignor to Atlanta, Ga".

Application May 1c, 1932,- Serial No. enact Claims. (Cl. 257-252) This invention relates to refrigeration in genunits adapted for use in all types of refrigerators including storage refrigerators, display case refrigerators and An important object of provision of metal fins which are detachably or permanently secured upon my invention is the any refrigerant conduit, and which metal fins present the proper ratio of cooling surface A further object of my refrigerant circulating sys of easily assembled and which present a large area which are cooled through refrigerant conveying A further object of aswell as cost of refrigerant units.v A further object of e my VlSlOn of a refrigerant to absorb heat.

invention is the proviapparatus comprising a tem having a plurality detachable absorbing fins of cooling surface and conductivity from the pipes. the invention is to provide invention is the pro-' apparatus which may be easily and economicallyas'sembled or taken apart and in which the heat ranged in staggered or air circulating within On the drawing:

the

absorbing units are arin line-assembled relation maximum volume of warm refrigerator.

Fig. 1 is a side elevation of a section of one my preferred units illustrating the intermediate mounting of the springs between the fins mounted about a refrigerant pipe:

Fig. 2 is an end elevational view showing the joined channel supporting units in cross section. Fig. 3 is a fragmentary view taken'from the right of Fig. 2 and illustrating the outside of adcross section.

and bind the springs and with respect to.

the refrigerant pipe.

As shown on the drawing: Fig. 1 shows a typical form of a smaller size refrigeration unit embodying the principles of our invention. A cooling r efrieeraut is emu a ed vide a plurality of metal I compression pump which reduces the refrigerant to liquid form, as is well known in the art. The refrigerant conveying pipe is bent so that different portions thereof are substantially parallel 10 and form a cooling unit of any desirableshape or size for convenient mounting within refrigerators or the like in such a manner that a amount of space is taken up.

A plurality of channel shaped mounting plates 11, each of which has one lateral edge thereof turned inwardly parallel to the main flat side thereof are successively superposed to form standards securely mounting the refrigerant conveying line as shown in Fig. .1. Each of the mounting members 11 has its double edge cut away to'form a semi-circularrecess for con-. venient reception of the refrigerant pipe 10. The mounting members 11' are mounted so that the recesses of adjacent mounting plates will coincide and lie about and secure therefrigerantjpipe 10 at various pointsin "substantially the same plane. Theopposite sides of the channel shaped mounting plates 11 have a plurality ofapertures which receive shortbolts 12 to secureadjacent mounting members 11 in superposed position as shown in Figs. 2 and 3. The circulation of a cooling refrigerant through the pipe 10 keeps the pipe 10 cold and causes it to absorb heat in the atmosphere or liquids with which it comes into contact. Because the cooling surface of the pipe 10 is very limitedv compared to the air circulation thereabout and the heat to be absorbed,- it is hi hly desirable to increase such heat absorbing surface by means of metal 40 fins which will be cooled by induction from the refrigerant conveying pipe 10. I therefore profins 13 which are easily mounted about the refrigerant pipe 10, the form or shape of which may be varied in accordance with the requirements of each particular case. 1 It is highly desirable that these flns may be easily and inexpensively mounted to permit .eco-' nomical installation thereof either upon a previously installed refrigerant pipe or a newly in-' 60 stalled refrigerant pipe. The form of finshown installation of my heat absorbing units in a, previously installed refrigerating plant having only the refrigerant thereby saving the cost of such previous installation and of considerable labor.

I desire that it be understood that the form of fin heretofore described may be manufactured in various ways and shapes. For example, a substantially circular metal stamping having an aperture through which the refrigerant line runs may be satisfactorily used when attached in one of the methods I describe herein.

The figures of the drawing show a highly satisfactory form of my invention which employs fiat metal fins 13 having central apertures which are successively slipped over the end of a pipe, and a resilient coil spiral spring 31 is slipped on said pipe immediately behind each fin. Each of said springs fit snugly about the pipe and the ends thereof contact respective adjacent fins 13 to holdthe fins in uniform spaced ,apartposition to any angle desired with respect to the refrigerant pipe 10. The angle desired may be regulated by bending the ends of the springs to a certain desired angle to the longitudinal axis of the spring, which when mounted .in the manner shown will hold the fins at the same angle. When a coil is formed I dip it into molten metal such as tin or lead which, after solidifying, forms highly satisfactory bond andholding means between portions of each spring and the refrigerant pipe.

A highly important feature of the construction shown is that the springs increase the conductivity of heat of the fins, particularly when the usual frost has formed about the refrigerant pipe and covers the springs and pipe- The con: tact of the ends of the springs with the fins permits quicker absorption of heat and increases the conductivity of the cold from the refrigerant pipe. The last fin at each end of each unlt'comprising a series of adjacent mounted fins may be held against outward movement either by a suitable ring or clamp (not shown) or by' soldering or otherwise fusing the metal on the pipe as indicated at 27 of Fig. 4 and in contact with the outer surface of' the end :fin. Such attaching means will likewise permit removal if it is desired to disassemble the unit or replace either the fins or the pipe because of deterioration or the like.

I amaware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted thzreon otherwise than necessitated by the prior ar I claim as my invention:

. 1. In a refrigerating plant, a refrigerant pipe havingportions thereof in different planes; a

plurality of metal heat absorbing fins removably mounted thereon; and coil springs about said refrigerant pipe between each pair of adjacent fins adapted to hold said fins in spaced apart position.

2. Ida refrigerating plant, a refrigerant unit comprising horizontally arranged piping adapted to circulate a refrigerant; a plurality of heat absorbing fins mounted about said piping, yieldable 4. For use in a refrigerant plant, a refrigerant pipe having portions thereof .in different planes; a plurality'of metal heat absorbing fins removably mounted thereon; said pipe and between adjacent fins, the ends of said coil' springs contacting adjacent fins and adapted to increase'the conductivity between said fins and said refrigerant pipe.

.5. In a heat refrigerating plant, a heat absorbing unit comprising a' refrigeration pipe; said pipe having diflerent'sections thereof in different planes; a plurality of supporting units adapted to be connected together in superposed relation to form mounting means for said pipe; a plurality of heat absorbin'glfins mounted on said pipe; means for yieldably mounting said fins in spaced apart relation on'said pipe; and metallic means adapted to hold said last mentioned means in position with respect to each other.

7 MA P. FUGLE.

and a coil spring about t 

